Pros
Compared to other video game companies, particularly console companies, Sony is a comfortable work environment. The hours are somewhat flexible, and taking vacation is not frowned upon. The pay is generous, and the benefits from being a part of the Sony group are nice.
Cons
Because it is so comfortable, no one leaves, which, combined with a large amount of corporate overhead and few runaway success titles means that the environment is static. Expect to remain where you are, both in terms of salary and position, for a long time after joining no matter how well you perform. There are few opportunities to advance, and annual pay reviews are essentially a list of excuses for why your salary will remain the same, because the company does not have the money to raise it and has not for years. Middle management is also atrocious to their employees, making maintaining motivation a struggle. Those who do leave, leave because they are seeking a challenge or a career versus security.